Jacob siegley



ipo

' UNITED STAT-Es PATENT f OFFICE.

JACOB sInGLnY,-on New YORK, N. Y.

BENCH -PLANl-z.

SPECIFICATION forming part of Letters Patent No. 269,968, dated January 2, 1883,

Application tiled May 22, 1882. (No inodcl.) A

To all whom it may concern:

Be it known that I, JACOB SIEGLEY, of the city, county, and State of New York, have iu'- vented certain new and useful Improvements in Bench-Planes, of which the following is a specification.

This invention has reference to certain improvements in bench-planes, for which Letters Patent ot' the United States have been granted to me heretofore, which Letters Patent bear date, respectively, July 1,1879, and Augustl,

1881, and are numbered 216,979 and 245,752, the improvements being designed with a view to lock the cutting-tool or plow in a more reliable manner and facilitate the forward feeding and adjusting of thel same.

The invention consists of a bench-plane, the stock of which is provided with an inclined cutting-tool or plow, the upper surface of which is laterally grooved or serrated, to be engaged by a wed ,ge-shaped locking-block having a cor- A respondingly-grooved bottom, said block being secured against an inclined cheek of the stock by a lateral screw -post and clamp nut, and moved forward by a longitudinal set-screw of the wedge-shaped block, so as to raise or lower the plow in the stock. i

jIn the accompanying drawings, Figure 1 rcpresents a side elevation of my improved benchplane, and Figs. 2 and 3 are respectively a detail section on line or fr, Fig. l, and a vertical transverse section on line y y, Fig. 2. l

Similar letters of reference indica-te corresponding parts.

Referring to the drawings, A represents the stock of my improved bench plane, which is made of cast-iron or-other suitable metal, and with a handle of the usual form atv the rear end. The middle part of the stock A is provided with an inclined recess, a, the lower surface otl which forms the bearing-surface for the detachable plow or other cutting-tool B. The cuttingtool B is provided at its upper surface and-near its middle portion with transverse grooves b b, which are engaged by the grooved or serrated bottom of a wedge -shape'd locking-block, B', the tapering top and side of which are guided along flaring cheeks d d of the stock A. The wedge-shaped block B is adjusted by means of a lateral screw-post, e, thatis secured to the block and passed through a recessof the stock A,the block being tightly clamped to the stock and cutting-tool by a screw-nut, e', as shown,- respectively, in Figs. 2 and 3.. The wedgeshaped block B is further arranged with a setscrew, f, that engages an interiorly-threaded socket of the Wedge-shaped block B', the setscrew f being-arran ged parallel to the cuttingtool or plow B, and provided with a head,f, having 4socket-holesi'or inserting a suitable lever-pin, whereby the screw may be turned in one or the other direction. l'.lhe headf of the screwf bears against a shoulder, f2, of the l stock A, so'that on turning the head the wedgeshaped block B', and consequently the cuttingtool or plow B, is set higher or lower in the stock, as required for the proper setting of the tool. The wedge-shaped block B' has to be of somewhat less length than the distance between the Haring front cheek, d, and the shoul- `der f2, so as to provide a certain play for the adjustment of the block and cutting-tool after the same has been placed in position in the recess ot' the stock. For adjusting the cuttingtool B the clamping nut is tirst loosened and the cutting tooladjusted so that its cuttingedge projects below the bottom surface of the stock A. The locking-block B is now clamped tightly tothe grooved portion of the cuttingtool B, and, finally, the tool adjusted forward or back by means ot' the adjusting setscrew f, so that the proper length projects below the bottom surface ot' the stock. In thisnmanner a reliable locking device for the cutting-tools of bench-planes is obtained,and a means wher'- from time to time, as required by the work` and the gradual wear of the tool.

Having thus described myin'vention, I claim as new and desire to secure by Letters Patent- 1. In a bench plane, the combination of a stock having ilarin g cheeks, a plow or cuttingsurface, a wedge-shaped locking-block having a grooved bottom, `means for clamping the block tightly to the cutting tool. and means and cutting-tool, substantially as and for the purpose set forth. 2. In a bencli-plane, the combination ofthe tool having transverse grooves at its upperw for longitudinally adj usting-the locking-block by the cutting-tool may be accurately adjusted f IOO stock A, having an inclined recess, a, aring cheeks do?, and shoulderfz, aplow or cuttingtool, B, having transverse grooves b b, a Wedgeshaped locking-block, B, having a grooved bottom, a, lateral screw-post, e, and clamp-nut e', and al longitudinal setscrew, f', all substantially as set forth.

In testimony that I claim the foregoing as my invention I have signed my name inv presl ence of two subscribing Witnesses.

JACOB SIEGLEY.

Witnesses: v

PAUL GoEPnL, SIDNEY MANN. 

